Closed Cell Events ================== :numref:`TableCaseDatesCC` lists case dates for closed cell events. .. list-table:: Case dates selected for LASSO-ENA for its closed cellular stratocumulus events. :name: TableCaseDatesCC :header-rows: 1 :class: tight-table :widths: 15 20 65 * - Case - Date - Description * - 1 - :ref:`2015-10-20 ` - * Extensive stratocumulus cloud event under easterly winds * Multiple periods having radar signatures of subcloud drizzle * Episodic breaks in the cloud field north of the islands * 5-day air mass back-trajectory from the U.S. northern central plains * - 2 - :ref:`2016-03-01 ` - * Widespread stratocumulus under southerly low-level flow * Increasing presence of subcloud precipitation after midday * 5-day air mass back-trajectories originated over the central North Atlantic * - 3 - :ref:`2016-03-08 ` - * Drizzling, asymmetric stratocumulus deck associated with southerly flow * More intense drizzle was observed around midday * The 5-day air mass back-trajectories originated in the central North Atlantic * - 4 - :ref:`2016-07-02 ` - * A drizzling stratocumulus deck under northeasterly flow * The strongest drizzle signatures occurred prior to midday * The cloud deck showed signs of erosion prior to 12 UTC, but re-established itself quickly and persisted throughout the remainder of the event * The 5-day air mass back-trajectories originated in the western North Atlantic * - 5 - :ref:`2016-10-15 ` - * A widespread stratocumulus deck * Low-level flows were from the northeast and east * The 5-day air mass back-trajectory originated over the U.S. plains via the central Atlantic * - 6 - :ref:`2016-11-15 ` - * A multi-day stratocumulus event with an interval of open cell type conditions * Ubiquitous precipitation observed throughout the event * 5-day air mass back-trajectories originating near Nova Scotia * - 7 - :ref:`2016-11-16 ` - * A multi-day stratocumulus event with an interval of open cell type conditions * Ubiquitous precipitation observed throughout the event * 5-day air mass back-trajectories originating near Nova Scotia * - 8 - :ref:`2016-11-19 ` - * Stratocumulus with embedded stronger precipitating cells * Northwesterly low-level winds, with additional upper-level clouds around midday * 5-day air mass back-trajectories originating local to the ENA site * - 9 - :ref:`2017-07-18 ` - * AN ACE-ENA campaign event with a G-1 aircraft mission * Closed cell stratocumulus under moderate northeasterly flow * 5-day air mass back-trajectories originated local to the ENA site * - 10 - :ref:`2018-01-25 ` - * Hybrid event that transitioned to drizzling stratocumulus conditions by midday * An ACE-ENA campaign event having additional ARM assets and a G-1 aircraft mission * 5-day air mass back-trajectories originating near southern Manitoba * - 11 - :ref:`2018-01-26 ` - * Hybrid event that transitioned to drizzling stratocumulus conditions by midday * An ACE-ENA campaign event having additional ARM assets * 5-day air mass back-trajectories originating near southern Manitoba * - 12 - :ref:`2018-02-04 ` - * This was a multi-day event collected during the ACE-ENA campaign * Widespread precipitating stratocumulus conditions under weak flow * 5-day back-trajectories that originated near the U.S. Rocky Mountains * - 13 - :ref:`2018-02-05 ` - * This was a multi-day event collected during the ACE-ENA campaign * Widespread precipitating stratocumulus conditions under weak flow * 5-day back-trajectories that originated near the U.S. Rocky Mountains * - 14 - :ref:`2018-10-27 ` - * A multi-day event that featured an open to closed cell transition * Widespread stratocumulus conditions beginning on October 28th * 5-day air mass back-trajectories originated from the U.S. Northeast * - 15 - :ref:`2018-10-28 ` - * A multi-day event that featured an open to closed cell transition * Widespread stratocumulus conditions beginning on October 28th * 5-day air mass back-trajectories originated from the U.S. Northeast * - 16 - :ref:`2019-03-10 ` - * A widespread stratocumulus event associated with light southerly winds * Select times had more intense drizzle with subcloud precipitation * 5-day air mass back-trajectories originated local to the ENA site * - 17 - :ref:`2022-01-06 ` - * Widespread and closed cloud event that followed frontal passage * Event associated with moderate low-level winds from the northeast * 5-day air mass back-trajectories originated from the U.S. west coast * - 18 - :ref:`2022-04-19 ` - * Widespread stratocumulus deck associated with low-level easterly winds * This cloud deck gradually thinned during the second half of the event * 5-day air mass back-trajectories from the U.S. and Canadian west coast * - 19 - :ref:`2022-04-22 ` - * Deepening stratocumulus deck that transitioned into a period of open-cell conditions * Strong low-level flow from the north that shifted westerly as a front approached * Frequent subcloud drizzle was observed * 5-day air mass back-trajectories from the U.S. upper Midwest * - 20 - :ref:`2022-06-22 ` - * Precipitating stratocumulus deck having embedded cellular behaviors * Northeasterly boundary layer winds * 5-day air mass back-trajectories that originated near the ENA site .. toctree:: :maxdepth: 0 :caption: Descriptions for days with Closed Cellular Sc LES simulations :hidden: enacase_20151020 enacase_20160301 enacase_20160308 enacase_20160702 enacase_20161015 enacase_20161115 enacase_20161116 enacase_20161119 enacase_20170718 enacase_20180125 enacase_20180126 enacase_20180204 enacase_20180205 enacase_20181027 enacase_20181028 enacase_20190310 enacase_20220106 enacase_20220419 enacase_20220422 enacase_20220622